Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8178780 | Electric insulation material, an electric device comprising the insulation material and a transformer | Olof Hjortstam, Rongsheng Liu, Leif A. Pettersson | 2012-05-15 |
| 6995646 | Transformer with voltage regulating means | Udo Fromm, Par Holmberg, Mats Leijon, Christian Sasse, Thorsten Schütte | 2006-02-07 |